Layer One - Primary anti-microbico filter - Filter large particles or hair.

Layer Two - High efficiency HEPA filter - Filter PM 2.5, source of allergy, powder Bacteria and Virus

Layer Three - Honeycomb activated carbon filter - Eliminate peculiar smells, absorb harmful gas’s

Layer Four - Cold catalyst filter - Efficiently resolve formaldehyde, benzene, ammonia gas, TVOC, sulfuretted hydrogen or other harmful gas’s

Layer Five - UV sterilization - Efficiently kill all kinds of bacteria

for disinfection

Layer Six - Negative ion - Eliminate dust, fresh air, remove

indoor static electricity for sterilization